Home / 77,070.20-115,314.60-45,497.43

Finding the Fourth Proportional to 77,070.20, 115,314.60 and 45,497.43

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Solution

The fourth proportional to 77,070.20, 115,314.60 and 45,497.43 is: 68,074.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,070.20 : 115,314.60 = 45,497.43 : x
  2. Step 2: Convert to fraction form
    77,070.20/115,314.60 = 45,497.43/x
  3. Step 3: Cross multiply
    77,070.20x = 115,314.60 × 45,497.43
  4. Step 4: Simplify right side
    77,070.20x = 5,246,517,941.48
  5. Step 5: Solve for x
    x = 5,246,517,941.48/77,070.20
  6. Step 6: Final answer
    x = 68,074.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.